SAE Diagnostic Trouble Codes (DTCs)
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
The DTC consists of a 5-digit alpha-numeric value with the following meaning:
SAE DIAGNOSTIC TROUBLE CODE EXPLANATION
| Component group | |
|---|---|
| P x x x x | DTC for drivetrain |
| Norm-Code | |
| P 0 x x x | DTCs defined by SAE with specified malfunction texts |
| P 1 x x x | additional emission relevant DTCs provided by manufacturer |
| P 2 x x x | DTCs defined by SAE with specified texts, from MY 2000 |
| P 3 x x x | additional emissions relevant DTCs provided by manufacturer from MY 2000 |
| Repair group | |
| P x 0 x x | Fuel and air mixture and additional emission regulations |
| P x 1 x x | Fuel and air ratios |
| P x 2 x x | Fuel and air ratios |
| P x 3 x x | Ignition system |
| P x 4 x x | Additional exhaust regulation |
| P x 5 x x | Speed and idle control |
| P x 6 x x | Control module and output signals |
| P x 7 x x | transmission |
| P x 8 x x | transmission |
| P x 9 x x | Control modules, input and output signals |